The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Islanding detection is an important protection issue of distributed generation. Since the overcurrent (OC) protection and OC relay grading is different for island mode and grid connected mode of operation, the conventional protection does not suits to active distribution network. It is essential to know the mode of operation first so that the relay setting may be shifted to island mode as soon as...
Intentional frequency perturbation by recently researched active islanding detection techniques for inverter based distributed generation (DG) define new threshold settings for the frequency relays. This innovation has enabled the modern frequency relays to operate inside the non-detection zone (NDZ) of the conventional frequency relays. However, the effect of such perturbation on the performance...
Penetration of distributed generation (DG) into the distribution network has changed the nature of conventional power distribution system, which was radial in nature. Power flow is now bidirectional and thus the increased penetration of DGs imposes a challenge on the conventional protection scheme which is only meant for passive distribution network. This paper deals with the protection of active...
The frequency relays are unable to detect islanding of a distributed generation when the active power mismatch is below 11%, at the event the islanding has occurred. The proposed technique has been implemented for islanding detection of an inverter interfaced grid connected distributed generation for such a worst case. The scheme incorporates reactive current injection scheme to the existing frequency...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.